Buckeye Brownies
There’s something absolutely magical about the aroma of freshly baked brownies wafting through your kitchen, isn’t there? Imagine a warm, chocolaty hug wrapped in a layer of smooth, creamy peanut butter that’s just waiting to melt in your mouth. Not to mention the shiny chocolate ganache topping that beckons for your attention with its glossy shine. Buckeye Brownies are a perfect harmony of flavors — rich chocolate, nutty peanut butter, and that luxurious ganache that makes you want to dive in for another bite.

This dish brings back fond memories of cozy gatherings with friends and family, where everyone is excitedly scurrying around the table, eager to snag the last piece. There’s a certain joy that comes from sharing a treat that delights both the eyes and the palate. Whether it’s a chilly fall afternoon or a vibrant summer picnic, these brownies make any occasion feel just a little more special. I can’t wait for you to try making Buckeye Brownies; they’re sure to become a favorite in your home!
Table of Contents
Why You’ll Love This Recipe
- Simple & Quick: In just about an hour, you can whip up a batch that will impress everyone.
- Irresistible Flavor: The combination of fudgy brownie, creamy peanut butter, and silky chocolate ganache creates a dreamy taste experience.
- Eye-Catching Appeal: With their beautiful layers, these brownies look as good as they taste!
- Flexible Serving: Perfect for parties, snacks, or even breakfast with a cup of coffee.
- Diet-Friendly Options: Easily adaptable for gluten-free or vegan lifestyles.

Ingredients You’ll Need
- 4 tablespoons unsalted butter: This adds richness to the brownie base. For a dairy-free alternative, try coconut oil.
- 8 ounces semi-sweet chocolate, chopped: A high-quality chocolate enhances the brownies’ decadence. You can use dark chocolate for an intense flavor.
- 1/2 cup vegetable oil: Helps keep the brownies moist and fudgy. Can be swapped with melted coconut oil.
- 1 and 1/2 cups powdered sugar, sifted: This sweetens the brownie batter smoothly. Make sure it’s sifted to avoid lumps.
- 2 large eggs + 1 egg yolk: The extra yolk offers a richer texture. All eggs need to be at room temperature for best incorporation.
- 1 teaspoon vanilla extract: Elevates the sweetness and balances flavors. Pure vanilla extract is always a great choice.
- 3/4 cup flour: Just enough to hold the brownie together without making it cakey. You can use almond or oat flour for a gluten-free version.
- 1 tablespoon cornstarch: A secret ingredient that helps create a fudgier texture.
- 1/2 teaspoon salt: Balances sweetness in the brownies. A pinch more can enhance the flavors!
- 1 and 1/2 cups peanut butter (creamy): The star of the show, bringing that rich, nutty flavor. Natural peanut butter is recommended.
- 1/2 cup unsalted butter: For the peanut butter filling, adds creaminess and richness.
- 2 and 1/2 cups powdered sugar: Ensures the filling holds its shape while providing sweetness. Sifting it will keep the filling smooth.
- 1 teaspoon vanilla extract: Just like before, adds depth to the filling’s flavor.
- 2 cups semi-sweet chocolate chips: Used in the ganache for a luscious topping. For a twist, dark chocolate can be used for a different flavor profile.
- 1/2 cup heavy cream: Melts beautifully over chocolate chips to create a silky ganache. You can substitute it with coconut cream for a dairy-free version.
How to Make Buckeye Brownies
Preheat and Prepare: Start by lining a 13×9-inch baking pan with parchment paper, leaving some overhang for easy removal later. Preheat your oven to 325℉. This step is essential to ensure even cooking and easy removal once the brownies are cooled.
Mix Chocolate and Butter: In a saucepan over medium heat, add the unsalted butter until it melts. Once melted, turn off the heat and mix in the chopped semi-sweet chocolate. Whisk until smooth and shiny, then stir in the vegetable oil and vanilla extract. Allow this rich mixture to cool slightly before moving to the next step.
Whisk Wet Ingredients: In a separate bowl, combine sifted powdered sugar with eggs and egg yolk. Use a whisk to mix until just combined — be careful not to overmix, as this can make the brownies tough.
Combine Chocolate Mixture: Carefully fold the cooled chocolate mixture into the egg mixture. This important step ensures that the heat from the chocolate doesn’t cook the eggs, creating a lovely fudgy texture.
Blend Dry Ingredients: In a small bowl, whisk together the flour, cornstarch, and salt. Gradually fold these dry ingredients into the chocolate mixture until just combined. The batter should be a thick, fudgy consistency and should have no visible streaks of flour.
Bake the Brownies: Pour the brownie batter into your prepared pan and spread it evenly. Bake in the preheated oven for about 30 minutes, or until the edges are firm and a toothpick inserted in the center comes out with just a few crumbs. Let them cool slightly in the pan.
Prepare Peanut Butter Filling: While brownies are baking, mix peanut butter and unsalted butter in a large bowl until creamy. Slowly add in the powdered sugar while mixing, then stir in vanilla extract. The filling should be thick and spreadable; if too stiff, a little more peanut butter can help.
Spread Filling: Once brownies are cooled but still warm, gently spread the peanut butter layer over the top with a spatula. Let it cool completely before adding the ganache.
Make Ganache: Heat the heavy cream in a saucepan until it’s just about to simmer (don’t let it boil). Pour the hot cream over the chocolate chips in a bowl and whisk until everything is melted and smooth. Pour this silky ganache over the peanut butter layer and gently spread it evenly. Wait for the ganache to set before slicing into squares.

Storing & Reheating
To keep your Buckeye Brownies at their best, store them in an airtight container at room temperature for up to three days; they’ll maintain their delightful fudginess. If you have leftovers, feel free to refrigerate for about five days. For longer storage, wrap them tightly and freeze for up to two months. When you’re ready to indulge again, simply thaw at room temperature for a fresh-tasting treat. Note that freezing may slightly change the texture, but they’ll still taste fantastic!
Chef’s Helpful Tips
- Use room temperature eggs for better incorporation into the batter, creating a smoother consistency.
- Don’t overmix the brownie batter after adding flour; this keeps them from becoming tough.
- For an even fudgier brownie, try baking just a minute or two less than the recommended time.
- Ensure your ganache is not too hot when pouring it over the filling; this prevents it from melting the peanut butter layer too much.
- Variations can include adding chopped nuts or sea salt on top for an added flavor kick.
Every bite of these Buckeye Brownies is pure bliss, combining so many delightful textures and flavors into one gorgeous dessert. And whether you share them or keep them as your secret stash, you’ll find it’s an experience worth savoring. So gather your ingredients, roll up your sleeves, and let’s get baking!
Recipe FAQs
Can I use natural peanut butter instead of regular?
What if I want to make these brownies gluten-free?
How can I enhance the flavor of the brownies?
Can I make these brownies in advance? How should I store them?
More Desserts & Appetizers Recipes
- Christmas Pinwheel Cookies
- Festive Christmas Snack Mix with Popcorn, Chex, and Santa Hats
- Lucky Leprechaun Chow
- Small Batch Chocolate Chip Cookies
- Cherry Pie
👉 If you make my Buckeye Brownies recipe, please leave a comment and a star rating — it really helps others discover the recipe.
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Buckeye Brownies
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 32 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
These Buckeye Brownies combine rich chocolate flavor with creamy peanut butter and smooth ganache, making the perfect treat for any occasion. Easy to prepare, these brownies are sure to impress with their decadent layers and delightful taste.
Ingredients
- 4 tablespoons unsalted butter
- 8 ounces semi-sweet chocolate, chopped
- 1/2 cup vegetable oil
- 1 and 1/2 cups powdered sugar, sifted
- 2 large eggs + 1 egg yolk
- 1 teaspoon vanilla extract
- 3/4 cup flour
- 1 tablespoon cornstarch
- 1/2 teaspoon salt
- 1 and 1/2 cups peanut butter (creamy)
- 1/2 cup unsalted butter
- 2 and 1/2 cups powdered sugar
- 1 teaspoon vanilla extract
- 2 cups semi-sweet chocolate chips
- 1/2 cup heavy cream
Instructions
- Preheat oven to 325°F and line a 13×9-inch baking pan with parchment paper.
- Melt unsalted butter and chopped chocolate together, then stir in vegetable oil and vanilla extract.
- In a separate bowl, whisk together powdered sugar, eggs, and egg yolk until just combined.
- Fold the cooled chocolate mixture into the egg mixture carefully.
- Whisk together flour, cornstarch, and salt, then fold into the chocolate mixture until just combined.
- Pour brownie batter into the prepared pan and bake for about 30 minutes.
- Mix peanut butter and unsalted butter until creamy, then add powdered sugar and vanilla for the filling.
- Once brownies cool, spread peanut butter filling over the top.
- Make ganache by heating heavy cream and mixing it with chocolate chips until smooth, then pour over the filling.
- Allow ganache to set before slicing into squares.
Notes
Store brownies in an airtight container at room temperature for up to three days.
For gluten-free version, substitute with gluten-free flour or almond flour.
Use natural peanut butter for a healthier option, but ensure it’s well-mixed.
Nutrition
- Serving Size: 1 brownie
- Calories: 250
- Sugar: 21g
- Sodium: 180mg
- Fat: 12g
- Saturated Fat: 5g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 32g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 30mg






